<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
    <script>
        window.addEventListener("DOMContentLoaded", ()=>{
            console.log('DOMContentLoaded')
        })
    </script>
    <script defer src="./01_defer_demo.js"></script>
    <script defer src="./01_defer_demo1.js"></script>
    <script defer src="./01_defer_demo2.js"></script>
</head>
<body>
    <ul>
        <li>item1</li>
        <li>item2</li>
        <li>item3</li>
        <li>item4</li>
        <li>item5</li>
    </ul>
</body>
</html>
